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Energies 2016, 9(3), 142; doi:10.3390/en9030142

Smart Control of Multiple Evaporator Systems with Wireless Sensor and Actuator Networks

Faculty of Electrical and Mechanical Engineering, University of Colima, Km. 9 carretera Colima-Coquimatlán, Coquimatlán 28400, Mexico
These authors contributed equally to this work.
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Academic Editor: Nyuk Hien Wong
Received: 3 December 2015 / Revised: 9 February 2016 / Accepted: 19 February 2016 / Published: 29 February 2016
(This article belongs to the Special Issue Energy Efficient Building Design 2016)
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Abstract

This paper describes the complete integration of a fuzzy control of multiple evaporator systems with the IEEE 802.15.4 standard, in which we study several important aspects for this kind of system, like a detailed analysis of the end-to-end real-time flows over wireless sensor and actuator networks (WSAN), a real-time kernel with an earliest deadline first (EDF) scheduler, periodic and aperiodic tasking models for the nodes, lightweight and flexible compensation-based control algorithms for WSAN that exhibit packet dropouts, an event-triggered sampling scheme and design methodologies. We address the control problem of the multi-evaporators with the presence of uncertainties, which was tackled through a wireless fuzzy control approach, showing the advantages of this concept where it can easily perform the optimization for a set of multiple evaporators controlled by the same smart controller, which should have an intelligent and flexible architecture based on multi-agent systems (MAS) that allows one to add or remove new evaporators online, without the need for reconfiguring, while maintaining temporal and functional restrictions in the system. We show clearly how we can get a greater scalability, the self-configuration of the network and the least overhead with a non-beacon or unslotted mode of the IEEE 802.15.4 protocol, as well as wireless communications and distributed architectures, which could be extremely helpful in the development process of networked control systems in large spatially-distributed plants, which involve many sensors and actuators. For this purpose, a fuzzy scheme is used to control a set of parallel evaporator air-conditioning systems, with temperature and relative humidity control as a multi-input and multi-output closed loop system; in addition, a general architecture is presented, which implements multiple control loops closed over a communication network, integrating the analysis and validation method for multi-loop control networks designed for multi-evaporator systems. View Full-Text
Keywords: multi-evaporator; air-conditioning systems; wireless sensor and actuators networks; wireless networked control systems; fuzzy control systems multi-evaporator; air-conditioning systems; wireless sensor and actuators networks; wireless networked control systems; fuzzy control systems
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

González-Potes, A.; Mata-López, W.A.; Ochoa-Brust, A.M.; Escobar-del Pozo, C. Smart Control of Multiple Evaporator Systems with Wireless Sensor and Actuator Networks. Energies 2016, 9, 142.

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